You go to an amusement park with your friend Betty, who wants to ride the 80-m-diameter Ferris wheel. She starts the ride at the lowest point of a wheel that, as you face it, rotates counterclockwise.

Part A

What is the magnitude of her displacement vector when the wheel has rotated by an angle of 40 ∘?

Express your answer with the appropriate units.

Part B

What is the direction of her displacement vector when the wheel has rotated by an angle of 40 ∘, measured counterclockwise from the horizontal?

A. 27.4 m

B. 0.35 rad or 20 degrees

Explanation:

A Ferris wheel with 80m in diameter would have a radius of 40m

Let the center of the wheel be the origin, so the vector (let call it a) from the the center of the wheel to Betty's starting (lowest) point is

When the wheel rotated by 40 degrees, Betty would have traveled a distance of:

horizontally

vertically

So her displacement vector is <25.71, 9.36>

A. Magnitude of this vector is

B. Direction of this vector is

or 20 degrees

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me